This TypeScript code:

enum token { begin, end, if_ } console.log(token.if_) console.log(token.begin)

with this config:

{ mangleProps: /_$/, mangleCache: { if_: false }, }

compiles down to:

// <snip> .. enum .. </snip> console.log(token.if_); console.log(0 /* begin */);

While this code is valid and works, I think it'd be better if it compiled to:

// <snip> .. enum .. </snip> console.log(2 /* if_ */); console.log(0 /* begin */);

It feels unintended that it doesn't work this way, but I could of course be missing something.

esbuild playground link